+ & - Strategies
Word Problems
+ & - Multiple Digit
Place Value & Comparing
Length
100
Solve
6 + 4 =
What strategy helped you solve this equation?
(Doubles, Near Doubles, Making a Ten, Related Facts)
10
Making a Ten
100
Ada wants to read 12 books over the summer. 5 books are stories about cats. The rest are stories about horses. How many books are stories about horses?
Show you work.
7 stories are about horses.
12 - 5 = 7
100
Solve
37 + 53 =
Is the answer even or odd?
90
Even
100
Compare 261 and 235 using < , > , =
235 < 261
100
Henry wanted to measure the length of his bed. Would he use more inches or feet to measure his bed? Explain.
Henry would use more inches, because inches are smaller than feet.
200
Solve
8 + 8 =
What strategy helped you solve this equation?
(Doubles, Near Doubles, Making a Ten, Related Facts)
16
Doubles
200
Luis sees 4 squirrels and 14 dogs at the dog park. 6 of the dogs are small dogs. The rest of the dogs are big dogs. How many dogs are big?
Show your work.
8 dogs are big.
14 - 6 = 8
We do not care about how many squirrels Luis saw!
200
Solve
54 - 32 =
Is the answer even or odd?
22
Even
200
How many hundreds, tens, and ones are in 427?
4 hundreds
2 tens
7 ones
200
Jandel needed to know the length of her pencil, but did not have a measuring device. What could Jandel use to estimate the pencil?
(What unit is she estimating in? Centimeters, Inches, Feet, Meters, Yards?)
Tip of her thumb to her knuckle - Inches
Or
Width of pinky - centimeters
300
Solve
16 - __ = 7
7 + __ = 16
9
300
There are 14 coats and some hats. There are 6 more coats than hats. How many hats are there?
Show your work.
Bonus For an extra 50 points:
How many hats and coats are there together?
There are 8 hats.
__ + 6 = 14
14 - 6 =8
BONUS
14 coats + 8 hats = 22 coats and hats
300
Solve
37 + 80 =
Is the answer even or odd?
117
Odd
300
Write 927 in expanded form.
900 + 20 + 7
300
The baseball bat is about 2 feet long.
400
Solve
5 + 8 =
What strategy helped you solve this equation?
(Doubles, Near Doubles, Making a Ten, Related Facts)
13
(Strategies Vary)
Making a ten 5 + 5 = 10 + 3 =13 OR
Near Doubles 5 + 5 = 10 + 3 = 13
400
There are some chairs in the art room. Mrs. Lopez brings in 16 more chairs. Now there are 42 chairs. How many chairs were in the art room to begin with?
Show your work.
There were 26 chairs to start with.
__ + 16 = 42
42 - 16 = 26
400
Solve
77 - 48 =
Is the answer even or odd?
29
Odd
400
What is the value of the underlined number?
487
80
400
The tape is about 7 centimeters long.
500
Solve
23 - __ = 14
What strategy helped you solve this equation?
(Doubles, Near Doubles, Making a Ten, Related Facts)
9
(Strategies Vary)
Ex: Related Facts 14 + 9 = 23
500
Miss Brady puts 15 pencils in her desk. Then she takes out 9 pencils. After school she puts 5 pencils back in her desk. How many pencils are in Miss Brady's desk now?
Show your work.
11 pencils are in Miss Brady's desk now.
15 - 9 = 6 + 5 = 11
500
Solve
__ + 37 = 82
Is the answer even or odd?
45
Odd
500
Solve:
600 + 20 + 4 + 50 + 5 + 200=
Bonus for 50 extra points:
What is the value of the hundreds place?
879
Bonus
70
500
Which objects are easier to measure with a centimeter ruler?
Watch Porch Spoon
Bus Suitcase
Watch
Spoon